Call of Duty: Black Ops Easter Egg - Zombies Glitches

1. If you look on your "Trophies" (PS3) or "Achievements" (360) there is a hidden trophy. This trophy can be obtained by pack-a-punching a ballistic knife and shooting it at a downed teammate , the teammate should be revived loosing no perks or weapons.
2. One player dolphin dives on the ground and another player jumps on top of him. Both players should go down and the soundtrack when someone gets a teddy bear from the Lucky Box. The box will move to a different room. Good for camping purposes. NOTE: This will only work with more than 2 players as the match would end otherwise.
3. On five the window closest to the door by the MPL a player can jump and will end up on top of one of the boards part of a larger EE???